Electrical connecting fixture



E. G. A PPLETON ELECTRICAL CONNECTING FIXTURE Filed July 10, 1922 theterminal bar is enlarged to form a head 23 whichis provided with anopening 24 to receive a circuit Wire or other conductor.

26 designates a rivet which is'provided at one end with-a head 25. Theshank of the rivetis made of different diameters at 26 and 27 to formbetween the said portions of different diameters an annular shoulder 28.The reduced portionof the rivet is at the end thereof remote from thehead 25, and said reduced end is shown as made hollow in the manner of atubular rivet or eyelet to facilitate theupsetting of the rivet end tofasten the elements of the fixture together.

. In assembling the parts thus described, a hole is punched in theinsulating strip and the rivet 26 is inserted through said hole andupwardly beyond the top face of the said strip.- Thereafter the terminalof the rivet extends a distance above theupper face of the terminal bar.Thereafter the extended reduced end of the rivet is upset'over the upperface of-the terminal bar by the action of .an upsetting die and a punch,acting'against the-rivet in the directlons of its axis or in othersuitable manner. The upsetting operation of the free end of the rivetforms said rivet over the upper faced the terminal bar to produce amushroom terminal 30 that is spread over saidterminal bar in'a manner tofixedly lockithe clip base and terminal bartogether 1n metal to metalcontact, and to fix the combined structure to the insulating strip 15.The head 25 of the rivet is shaped to become embedded or countersunk inthe underfaceo'f the'sai'd insulating strip 15 so a that no metalprojecting parts will project from the under side of the said strip.

The parts thus riveted together efi'ects' a firm fastening-of thefixture as a wholeto the insulatlng strip, and also rigidly con-' finesthe clip base and terminal bar between the shoulder 28 and mushr omterminal 30 I with a metal to metal contact. It will thus be seenthatshould the insulating strip'15 become shrunk and reduced inthickness,

due to the drying of its fibre under'heat,

such consequent looseness of the rivet in the strip will not affect thefastening of the fixture elements together, inasmuch as said par s are'securely bound between metallic,-

permanently spaced shoulders on the rivet.

. u'nitarily integral shoulders to bond the fixture parts together.

When the clip and terminal barare assembled the engaging surfacesthereof "will be in close contact to form a good conductin path forelectric current through the multipart fixture, and this path, will bemaintained by reason of the fastening pressure developed by theshouldered upset rivet.

It will be understood that changes may be made in the-constructiondescribed within the spirit of the invention. For instance,

it may not, in all uses, be-necessary. to use a tubular ended rivet. Thetubular structure is preferable, however, by reason of the ease ofupsetting it to produce a symmetrical head or holding terminal. Again,in some uses the terminal bar'may be'applied under the clip base insteadthereabove, as herein shown.

I claim:

1. An electrical connecting fixture comprising a terminal member, a clipmember, and a singledevice adapted for fastening the fixture to aninsulating base and having permanently spaced, unitarily integralshoulders for permanently binding the 'said members together.

2. An electrical connecting fixture comprising a terminal member, a clipmember, and means for fastening said fixture on an insulating base,formed with means to'permanently and fixedly bind the terminal and clipmembers together, independently of the attachment of the fixture to saidinsulatingflbase.

3. An electrical connecting fixture comprising a terminal member and aclip memer provided with v registering openings,

and a headed attaching rivet formed between its ends with an integralshoulder. be-

tween which and the upset end of the rivet said members are fixedlybound together.

4. An electrical connecting fixture comprising afterminal member and a'clip member provided with registering openings, and a headed attachingrivet formed between its ends witha shoulder, with its smaller endextending-through said openings and with its terminal upset over one ofsaid members.

5. An electrical connecting fixture com-, prising a terminal member, aclip comprising clamping arms and a connecting base, .said. member andbase being fitted one over the other and provided with registeringopenings,.and a single clamping and attaching device to attach thefixture to an insulating element and having permanently spaced,

6. An electrical connecting fixture com prising a terminal member, aclipcomprismg clamping arms and a-connecting base,

said member and base being fitted one over" the other and provided withregistering openings, and an attaching rivet projecting through saidopenings and upset at one of its permanently nemr ends over one of saidparts and formed between its ends with a shoulder which oomprisesv withthe upset end of the rivet means to lock said terminal member and hssepermanently in metal to metal contact.

7. An electrical connecting fixture comprising a terminal member and a,clip member applied one over the other and provided with registeringopenings, and an attachin rivet formed between its ends with a, shouder, with its consequent smaller end projecting through said openings,and tubular at its free smaller end to be upset over one of said parts.

8. The combination with an insulating base, and e fixture attachedthereto, said finture oomgz'ising e terminel member end a clip mem r,overlying one on the other end having registering openin and e singleheaded rivet for attaching t e fixture to saidbase adapted to extendthrough said base and through said registering openings, and shoulderedbetween its ends to cooperate with its free upset end to fixedly bindthe terminal and clip members in permanent metal to metal content;

In witness whereof I claimthe foregoing as my invention, I hereuntoappend my signature this 24 day of June, 1922.

. ERNST G. APPLEN.

